different between assaying vs cupellation

English

assaying

assaying (plural assayings)

A trial by assay.
- 1854, Carl Friedrich Plattner, Sheridan Muspratt, The Use of the Blowpipe in the Qualitative and Quantitative Examination of Minerals, Ores, Furnace Products, and Other Metallic Combinations
  To these [compounds] belong native gold, alloys of gold and silver, and the argentiferous gold, or auriferous silver, obtained from the assayings of auriferous minerals and ores.

cupel +? -ation

cupellation (countable and uncountable, plural cupellations)

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